The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2022
Filed:
May. 21, 2018
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Shinichirou Hagihara, Tsuchiura, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
A traveling device () is provided with an electric motor () provided in a vehicle body () of a dump truck (), an output shaft () an axial base end of which is connected to the electric motor () and which outputs rotation of the electric motor (), a bottomed hole spline () formed in an axial front end of the output shaft (), and an input shaft () which has a shaft spline () spline-coupled to the hole spline (), and inputs the rotation of the output shaft () to a reduction gear mechanism (). The output shaft () is provided with an oil reservoir space () formed in the innermost part of the hole spline (), an annular oil groove () and an oil path () providing communication between the oil reservoir space () and the annual oil groove (). Lubricant oil () supplied to the annular oil groove () is supplied via the oil path () to the oil reservoir space (), and is supplied to a spline joint between the hole spline () and the shaft spline () with rotation of the output shaft ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile